Deformable Liquid Mirror.
DEPARTMENT OF THE NAVY WASHINGTON DC
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This patent discloses a liquid mirror for high energy lasers. A working liquid such as mercury, is used as the reflecting surface for laser light. Dielectric enhanced reflecting techniques can be used to increase significantly the amount of reflection from the working liquid. The liquid is contained in a pressure cell behind a transparent optical flat. By varying the pressure cell of the liquid, compensation for the aberration caused by heat absorption can be made. These same pressure changes can be used to correct for laser beam wavefront distortions produced elsewhere in the laser, director or atmosphere. Author
- Lasers and Masers